Caster-retaining device.



D. A. MAGGUAIG. GASTER RETAINING DEVICE. APPLICATION FILED OUT. 31,1908.

\ iEfltiI:

GRAHAM o0. PmIo-Lmimmma. WASHINGTON a c.

PatentedrAug. 3, 1909..

DUNCAN A. MACCUAIG, OF NEBRASKA CITY, NEBRASKA.

oASTER-R TAIMNG DEVICE.

Specification of Letters Patent.

Patented Aug. 3, 1909.

Application filed October 31, 1908. Serial No. 460,483,

7 To all whom alt-may concern:

Be it known that I, DUNCAN A. Michelin,

: a citizen-of the United States, residing at Ne braska City, in the county'of Otoe and State of Nebraska, have invented a new and useful v Caster-Retainer, of which the following is a.

specification.

My lnvention relates to devices for retain ing casters within thetubular legs of articles of. furniture, and particularly to resilient ex pansible retainers, which are placed over the "pintle of the caster, compressed, inserted Within the tubular leg of the article; of furniture, and then ex [anded againsttheinside of the leg, thus ho ding the caster in place and centering the same.

The objects of my invention are to make a retainer of sheet metal, which will be 7' strengthened so that it may successfully 2O Withstand. all sidewise and'torsional stress,

to which it is subjected, to increase the expansive force of the retainer by providing c ouble spring elements for expanding the retainer, to protect these spring elements by arranging them within the body'of the retainer, and particularly to provide a retainer 'composed of twov members, and having ,means whereby one of these members may be forced equally at top and bottom against the socket in which the retainer is received.

My invention consists in the'arrangement' of parts and details of construction set forth in the accompanying specification and more 7 specifically stated in the appended claims.

7 Fig.3 is a sectiona View of Fig. 2.

i wheel, 3, the yoke, in which the "wheel is 7 tainer.

In the drawings :-Figure'1 is a side elevati on of my retainer in lace within the socketed leg of an'article of furniture. Fig. 2 is a like view showin the retainer'expanded. Fig. 4 is a perspective view ofone member of my re- Fig. 5 is a'perspective view of the op osed member. I

imilar reference numerals designate correspondingparts in all the figures of the dravn'ngs.

In the drawings, 2 designates a caster mounted, 4 thepintle attached to the yoke, 5 the usual shoulder formed on the intle,

and 6, the inverted cup-like shield oosely mounted on the pintle and closing the recess "in the leg of the article of furniture. 'All 7 these parts are as usual in furniture casters,

and need no extended description.

Mv retainer COHSlStS of two folded sheet; I metal members, pre'ferablymade of a strip of sheetsteel adapted to engage the pintle of va caster, one member being received Within the other, having spring tongues formed u on it adapted to bear against the other mem er, and normally forced out therefrom to expand the retainer against the walls of the socket.

The particular advantage due to this construction lies in the fact that the retainer is expanded along its whole length and is therefore forcedfout equally against the walls of the recess in the furniture leg.

Referring particularly to Fig- 5, which shows one member of the retainer, 7 desig- I nates a side plate of sheet steel having inperforated at 10 for the passage of the pintle 4. Fig. 4 shows the other member of .my de 'vice consisting of a side plate 11 having in wardly bent lateral flanges 12 and inwardly bent ends 13 of disk like form, perforated at 14 for the passage of the pintle 4, these perforations being in the form of slots in order to allow an expansive movement of the member upon-the pintle. This member of my device differs from that shown in Fig. 5 by being sufliciently shorter than the member 5 .w'ardly bentlatera'l strengthening flanges 8 I that it can be slipped in between the end disks 9, and also difiers in having the spring tongues 15 extending over the end disks 13 and bent toward each other each at an obtuse angle to the end disks, as shown in Figs.

one within the other, and the pintle 4 passed through the perforated ends thereof, as

shown in Fig. 2. The two members are then forced toward ecah other, compressing or bending inwardthe spring tongues 15 and the retainer is inserted within the socket or recess in the leg of the piece of furniture.

The pressure of the spring tongues will force;

the members out relative to each other, the slot 14 allowing this expansion. It-will be seen that the members provided with the spring tongues will be forced out equally both at top and bottom and that the plates 7 and '11 will bear along their whole length against the walls of the recess into whichithe,

retaineris inserted. My construction there- I fore not only provides very'strong, expansive action due to the use'of two opposedv sprin s 15, but provides for a very'firm frictional contact between the side plates of the retainer and the furniture leg to which it is applied.

From the foregoing, it is thought that the construction, operation and many adva11- tages oi the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of construction, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A caster retainer formed of two oposed independent side plates having means 'lor attachment to the pintle of a caster, one of said side plates resiliently bearing against the opposed side plate to force the said side plates relatively outward from each other.

2. A caster retainer formed of two opposed independent side plates having means for attachment to the pintle of a caster, one of said side plates having opposed spring tongues thereon bent toward each other and bearing against the op osed side plate to force said side plates re atively outward from each other.

3. A caster retainer formed of two opposed members, each composed of a side plate and two perforated end disks, one of said members being shorter than the other, insertible between the end disks thereof and having spring tongues formed therewith adapted to bear against the opposed side plate to force said side plates relatively outward from each other.

4. A caster retainer formed of two opposed members each composed of a side plate and two perforated end disks bent at right angles to the side plate, one of said members being shorter than the other to ermit its end disks to be insertible between t 1e end disks of the other member and having spring tongues extending from the end disks of the same width as the opposed side plate and bent toward each other and outward at an obtuse angle to the end disks and adapted when the parts are assembled to bear against the inside face of the o posed side plate to force said plates relative y outward from each other, said side plates being provided with lateral flanges bent at right angles to the plane of the side plates one pair of said lateral flanges engaging on both sides of said spring tongues.

In testimony, that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

DUNCAN A. MACOUAIG.

Witnesses:

PAUL JEssEN, F. A. BARTLING. 

